Identifying Independent and Dependent Variables
Writing Equations
Equation Review
Input, Output, Rule
Integer Review
100
Is the output an independent or dependent variable?
Dependent Variable
100
Write an equation for the table:
Number of Tickets, t Cost, c
1 5
2 10
3 15
c=5t
100
Solve for x:
x + 2 = 9
x = 7
100
Fill in the missing value for the output
Input Rule 2s Output
1 2(1) 2
2 2(2) 4
3 ?
6
100
-8 + (-6)
-14
200
What is the dependent variable?
Height (feet)
200
Write an equation for the table:
m=70h
200
3x = 12
x= 4
200
Fill in the missing values
Input Rule s+2 Output
3 3+2 5
4 ?
5 ?
6
7
200
-2 + 9
7
300
The total cost, t of a gym membership is $20 for each month, m. What are the independent and dependent variables?
Months, m- Independent
Total Cost, t- Dependent
300
Write an equation for the table
Number of pounds, p Cost, c
1 3
2 4
3 5
c=p + 2
300
x/5 = 10
50
300
Fill in the missing value
Input Rule Output
5 s-1 4
? s-1 8
? s-1 12
9
13
300
-2 - 9
-11
400
Identify the independent and dependent variables: The number of gallons of paint, p to paint a walls, w.
Walls, w- Independent
Paint, p- Dependent
400
Write an equation for the table:
Parks, p Hours, h
1 6
2 7
3 8
h=p+5
400
x - 8 = 19
27
400
Fill in the missing values
Input Rule, 1.50+t Output
1.50 1.50+t 3
? 1.50+t 3.50
? 1.50+t 4.50
2
3
400
12 - (-9)
21
500
What is the independent variable in the table?
# of hours
500
First write an equation for the table AND then figure out how many miles it will be if there are 9 hours
495 miles
500
x/12 = 24
288
500
Fill in the missing values:
Input Rule Output
32.35 x-5 27.35
50.75 x-5 ?
60.25 ?
45.75
55.25
500
-15 - (-5)
-10